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Question DetailsAsked on 1/30/2017

My GF flushes her toilet in the morning but when she's home from work there is some debris back in the toilet. Why?

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2 Answers


Possibly it is not fully flushing - either due to a blockage in the line or more likely within the toilet water passageway itself (the "gooseneck" you can see on the sides of many toilet bases), or it is not clearing out completely because the tank is not fully filling.

If you check the water level in the tank - should refill to near to the "fill line" which is usually embossed in the back wall of the tank casting - just below the top of the vertical about 1 inch overflow tube. Also, the toilet should flush fully and vigorously, including a goodly amount of water flowing into the bowl and out the outlet opening at the end of the flush to move the material up over the top of the gooseneck. If the flush mechanism or chain is not fully opening the flapper or flush column in the bottom of the tank so you are getting a weak flush (even though it might fully empty the tank) this can result in incomplete flushes.

Also, with gravity (not pressure) flush water conservation toilets this is way more common - if you have a 4-5 gallon tank but it does not fully empty (look inside tank while flushing) you can typically adjust the delay time for the flapper closing, or hold it open longer to empty the tank by holding the flush handle down.

If that is working well and there is nothing left in the toilet within say 1 minute after the flush is complete and bowl is refilled, then toilet itself is likely OK and there is a partial blockage in the drain lines that are starting to back up into her toilet when anotehr toilet is flushed in the building. If that toilet is NOT the lowest elevation drain (including floor drains) in the house, then the blockage is likely in the drains lines within the house. If it IS the lowest, then could be a blockage in the underground lines to street or septic tank as applies - or possibly a septic tank that is overfull or leach field saturated and unable to handle the outflow any more.

You can find LOTS of previous similar questions with answers in the Home > Plumbing and Home > Septic links in Browse Projects, at lower left, which go into more detail on septic tank issues, sewer line blockages, etc.

Possible running a bunch of hot water withsome liquid dish soap in it (watch drains in the house for backup when doing this) down the toilets might clear this out if an in-house clog - usually below-groundclogs need mechanical removal.

If increasing the amount of water used during a flush, or using hot waster to flush out the lines (assuming this does not cause backups) does not do it, then your answer is getting a Sewer and Drain Cleaning contractor out to clear your sewer lines. I recommend if a simple toilet-auger snaking (to clear a blockage near to the toilet) does not clearit, then to to rout or jet it out all the way to street or septic tank to avoid having the clog just move a ways dowen the line and clog up again.

Answered 3 years ago by LCD



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Answered 3 years ago by Member Services

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